FRQ
   68 SIUM ERECTUM HUDSON     1-6
   61 SPARGANIUM SIMPLEX HUDS 1-6
   53 CALLITRICHE OBTUSANGULA 1-6
   48 HELODEA CANADENSIS RICH 1-6
   35 CALLITRICHE OBTUSANGULA 3-6
   34 NUPHAR LUTEUM SM.       1-6
   33 LEMNA MINOR L.          1-6
   31 LEMNA TRISULCA L.       1-6
   23 SAGITTARIA SAGITTIFOLIA 1-6
   22 SPARGANIUM SIMPLEX HUDS 3-6
   21 SIUM ERECTUM HUDSON     4-6
   20 RANUNCULUS TRICHOPHYLLU 1-6
   20 MYRIOPHYLLUM SPICATUM L 1-6
   19 POTAMOGETON PUSILLUS L. 1-6
   19 HOTTONIA PALUSTRIS L.   1-6
   16 RANU TRIC VAR. TRICHOPH 1-6
   14 NASTURTIUM OFFICINALE R 1-6
   12 MYRIOPHYLLUM VERTICILLA 1-6
   11 POTAMOGETON NATANS L.   1-6

    9 POTAMOGETON PUSILLUS L. 3-6
    9 POTAMOGETON MUCRONATUS  1-5
    9 LEMNA TRISULCA L.       4-6
    9 BUTOMUS UMBELLATUS L.   1-6
    9 RANUNCULUS FLUITANS LAM 1-6
    9 NUPHAR LUTEUM SM.       4-6
    8 HOTTONIA PALUSTRIS L.   3-6
    7 LEMNA MINOR L.          3-6
    7 SAGITTARIA SAGITTIFOLIA 3-6
    7 OENANTHE FLUVIATILIS CO 1-4
    6 SPARGANIUM RAMOSUM CURT 1-6
    6 OENANTHE FLUVIATILIS CO 3-4
    6 RANUNCULUS FLUITANS LAM 3-6
    5 HELODEA CANADENSIS RICH 4-6
    5 GLYCERIA ALTISSIMA (MOE 1-6
    5 SCIRPUS LACUSTRIS L.    1-6
    5 RANUNCULUS FLUITANS LAM 4-6
    5 HIPPURIS VULGARIS L.    1-6
    5 NASTURTIUM OFFICINALE R 3-6

    5 CERATOPHYLLUM DEMERSUM  1-6
    4 ZANNICHELLIA PALUSTRIS  1-6
    4 POTAMOGETON PECTINATUS  1-6
    4 POTAMOGETON DENSUS L.   1-6
    4 LEMNA GIBBA L.          1-6
    4 ACORUS CALAMUS L.       1-6
    4 RANUNCULUS CIRCINATUS S 1-6
    3 POTAMOGETON PERFOLIATUS 1-6
    3 BUTOMUS UMBELLATUS L.   3-6
    3 MYRIOPHYLLUM SPICATUM L 4-6
    2 SPARGANIUM RAMOSUM CURT 3-6
    2 POTAMOGETON MUCRONATUS  3-5
    2 POTAMOGETON LUCENS L.   1-6
    2 POTAMOGETON CRISPUS L.  1-6
    2 POTAMOGETON COLORATUS V 1-6
    2 SPIRODELA POLYRRHIZA (L 1-6
    2 GLYCERIA FLUITANS (L.)  1-6
    2 SCIRPUS LACUSTRIS L.    3-6
    2 ALISMA PLANTAGO L.      1-6

    2 ALISMA NATANS L.        1-6
    2 NYMPHAEA ALBA L.        1-6
    1 AZOLLA FILICULOIDES LAM 1-6
    1 POTAMOGETON TRICHOIDES  1-6
    1 POTAMOGETON RUFESCENS S 1-6
    1 POTAMOGETON PERFOLIATUS 3-6
    1 POTAMOGETON PECTINATUS  4-6
    1 POTAMOGETON NATANS L.   4-6
    1 POTAMOGETON CRISPUS L.  2-6
    1 IRIS PSEUDACORUS L.     1-6
    1 HYDROCHARIS MORSUS-RANA 1-6
    1 ACORUS CALAMUS L.       5-6
    1 ALISMA NATANS L.        3-6
    1 APIUM NODIFLORUM (L.) L 1-6
    1 RUMEX HYDROLAPATHUM HUD 1-6
    1 MENTHA AQUATICA L.      1-6
    1 CALLITRICHE HAMULATA KU 1-6
    1 CALLITRICHE HAMULATA KU 3-6